Snowplow with side chute



July 28, 1931. .1. o. JOHNSON SNOWPLOW WITH SIDE CHUTE 3 Sheets-Sheet 1Filed Nov. '19, 1928 July 28, 1931. J. o. JOHNSON SNOWPLOW WITH SIDECHUTE Filed Nov. 19, 1928 3 Sheets-Sheet 2 July 28, 1931. J Q JOHNSON1,816,589

SNOWPLOW WITH SIDE CHUTE Filed Nov. 19, 1928 3 Sheets-Sheet 5 bank.

' from said prow Patented ul 28,1931

U TED STATES PATENT OFFICE JOHN O. JOHNSON, O! WHITE BEAR, ABSIGNOB TO.

COMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF 1: Bowma- KINNEBOTASNOWPLOW WITH SIDE OHU'IE Application filed November 19, 1988, SerialNo. 820,852. U

This invention relates to a snow plow, and particularly to a low ada tedto clear highways of snow. is is wel known, there are now an immensenumber of improved and paved highways and it is rapidly'becoming thepractlce to keep thesehighways open all winter, even in sections wherethere is a large amount of snow. It is desirable to have a plow whichcan clear the snow from the highway no matter what the size of thedrifts, and one which will discharge the snow clear of the highway.Where the drifts are very deep and a snow plow cuts through, the snowtends to drop down from the top and sides of the drift and form a talusor bank of snow which narrows and obstructs the road. This. result willoccur more commonly where the snow is not thrown far enough to one sideor is not projected over the top of the drift. It is an object of thisinvention, therefore, to provides. snow plow having means for moving thesnow laterally and discharging the same at a considerable hei ht so thatit will be discharged over the si e of the drift or snow It is a furtherobject of the invention to rovide a snow plow having means for movingthe snow' to one side and discharging the same at some height, togetherwith means for directing the dischar ed snow laterally.

It is also an object of this invention to provide a snow plow comprisinga prow portion, a mold board extending laterally iglrtion, said moldboard having a blade or ife at its outer end disposed in a substantiallyvertical plane, together with discharge means for the snow disposedinwardly of said knife.

It is still another object of this invention to provide a snow plow asset forth in the precedin paragraph, in which the outer end of t e moldboard is partially closed and has upwardly extending means through whichthe snow is discharged by said discharge means.

board having its outer end partiallyclosed and means for increasing thedischarge 0 ning at the outer end of said mold boar It is morespecifically an object of this invention to provide a snow plow having alaterally extending concave mold board of partially cylindrical form atits outer end, having a portion cut away at its upper side, togetherwith an upwardly extending open-- slded discharge chute having its lowerend embracing the opening formed by said cut away portion of said moldboard, said plow having rotary discharge means at the outer end of saidmold board for discharging the snow through said chute.

It is still another object of this invention to prov de a snow plow asset forth'in the receding paragra together with an ad-' ustable curvedde ecting member at the top of said chute for directing the snow lat-1oerally.

These and other objects and advantages of the invention will be fullyset forthin the following description made in connection with theaccompanying drawings, in which I like reference characters refer tosimilar parts throughout the several views, and in which.:

Fig. 1 is a view in front elevation of-the P I Fig. 2 is a top plan viewwith some parts broken away and others shown in horizontal section,together with part of the automotive: vehicle which propels this plow;

Fig. 3 is a partial view in rear elevation;

Fig. 4 is a horizontal section taken on. line 4-4 of Fig. -5 asindicated by the arrow;

Fig. 5 is a view in side elevation of the plow;

Fig. 6 is a vertical section taken on line 6-6 of Fig, 5, as indicatedby the arrows;

Fi 7 is 'a'-horizontal section taken on line -7 of Fig. 6 as indicatedby the arrow;and "I Fig. 8 is a vertical sectional view of a portion ofthe plow taken on the line 8-8 of fiefe'rring to the drawings, a low isshown comprising rearwardly and aterally Mi extending mold boards 10meeting ina rcarwardly,and-upwardly extending line 11 at flangesconnected together by headed and nutted 'bolts 12. The lower cdgesofmold boardsIO are received-in plates 13 having a forwardly extendingtongue or projection 14 at the centerbof the plow. A handle 15 is shownat the center, of'the' plow, as illustrated in Fig.1, adapted to operatemechanism not showmfto-dift the front of the plow. The mold boards '10are concave and the concavity increases toward the outer end of the moldboards," whichouter ends are semi-cylindricall'in shape as bestillustrated in Fig. 8. The outer end of each mold board is closed'orpartially closed by a plate 16, said plate havinga triangular upperportion'16a hingedto the upper fixed portion of plate 16 at 17f'so' asto swing downwardly as indicated in dotted lines in Fig. 5. Plate 16ahas a hasp 16b hinged thereto fitting over a staple 160 secured in theside of chute 19, a hook 16d being adapted to pass through said sta leat the outer side. of the hasp, said hoof; being'secured to the end of'a' short chain. 166 secured to the "chute 19. Thetopportions of themold boards 10 are-cutaway along the line 18 as shown in Figs; 1, 3 and6 and a chute 19- i s provided, which isopen at its outer sideandextends upwardly above said mold boards. -"Thechute 19 is tapered andhas its lower end connected to the mold,

board so as to enclose the opening made by said cut away portion, saidchute having its outer side'flush withthe outer end of said mold board.A plate or blade 20 extends along the front of the mold board at itsouter side, said plate being disposed in a vertical plane and extendingrearwardly at its lower .end, the same being attached to plate 16 and toan extension 19a of chute 19, as shown in Fig. 5. A deflecting member 21is provided at the top of chute 19, the same be ng hinged to the rearside of said chute at 22. Member 21 has an adjusting handle 23 securedthereto which is pivotally connected to a pipe or tube 24 extendingdownwardl in the rear of chute 19. Pipe 24 has exten ing thereinto a rod25 pivoted at its lower end to a bracket 26 secured to the rear of chute19. Pipe 24 and rod 25 have holes 27 therein adapted to aline andreceive a pin carried by swinging handle 28 secured to pipe 24 so thatsaid pipe24 and rod 25 may be held in various positions. Each mold board10 has an opening therethrough adjacent its inner end and a bracket 29is secured to each mold board having an 'outwardly projecting hub 29aand hub 29?), which projects through the mold board to the rear thereof.The ends of the hubs 29b are connected to. the opposite endsrespectively of a gear housing 30 disposed in the tends a. shaft 31.

' rear of the mold boards having a rearwardly projecting portion 30athrough which ex- The shaft 31 is connected by bevel gears, not shown,to laterally extending shafts32 enclosed by housings 34,

said shafts'and housings extending to the discharge rotors 35 disposedat the front and outer ends of the mold boards 10. Said discharge rotors(.OlllPl'lSt a plurality of curved blades 35a secured at one end to hub35?) and at their other sides to a ring 350, said ring also supportingone end of brackets 36 which extend across and reinforce 'the rear sidesof the blades 35a. Thehousings 34' are supported'by brackets 37 securedto the front of the mold board. The discharge members 35 are disposed atthe outer ends of the mold boards and substantially beneath the chutes19. The housing 30 has handles 43 fulcrumed thereon forming shift leversfor moving the shafts '32 into and out of engagement with the rotors 35.Arms 44 are shown for holding the levers in one position. The shaft 31is connected by a universal joint 38 to a shaft 39 which is in turnconnected'by a flexible coupling 40 to the crank shaft of the motor 41of the propelling automobile or truck, a portion ofthe frame of which isshown as 42.

The mold boards 10 have a bar 45 extending along the rear side along thebottom thereof having rearwardly projecting spaced apertured lugs 45a.forming means for connecting the plow to the propelling vehicle. Aconnecting member 46 is also used pivoted to the frame 42 by the headedand nutted bolts 47 and also pivotally connected to lugs 48 forming partof the plow. The plow or mold boards have a rearwardly projecting frame49 comprising screws 50 used for tilting the plow, some of the operatingmechanism of which is shown as 51. This mechanism forms no part of thepres .ent invention and is shown in more detail in the co-pendingapplication of John 0. Johnson, S. N. 120,603, filed on July 6th, 1926,now patent No. 1,754,322. Certain bracing frame members 52 are alsoshown as extending along the rear side of the mold boards 10.

In operation the plow will be pushed forwardly from the rear by thetruck on frame 42 and shaft, 31 will be rotated from the shaft of themotor 41 through the shaft 39. This will, through the gears in housing30 rotate the shafts 32 and rotors 35 will be driven. As the plow movesalong the highway, snow is first encountered by the forwardly projectingprow and the snow is moved laterally and rearwardly along the moldboards to the rotors 35. The rotors are driven at high speed and thesnow is engaged thereby and discharges through the opening above plate16 and .into the chute 19. The snow is prevented from beingproected"outwardly by the plate 16 and the ly sufiicicntly to get upover the top of the bank and the bank W11]. have a downward slope onaccount of the fact that the blade 20, the plane of the outer end of themold board and chute 19 extends outwardly and upwardly as clearly shownin Figs. and 6. If the drift or bank is not too high, the deflector 21will be moved over the top of chute 19 asshown in Figs. 3, and 6 tothrow the snow laterally. If the drift or bank is very high thedeflector 101 may be swung inwardly as shown in Fi 1 by a swmgmg lever23downwardly and telescoping tube 24on the rod 25. With the snow thusdischarged upwardly and outwardly the road will be kept clear at thebottom of the bank formed in the drift of snow and there Wlll be notendency for the snow to drop down to the foot of the bank and form aride or talus which will obstruct the road. W'hen the plow is operating onlesser drifts of snow the plate 16a can be swung downwardly and the snowallowed to be discharged more directly outwardly. ThIS will be donewhere there is plenty of opportunity to get the snow well off to theside of the road. The blade 20 acts effectivelyto cut through the driftto form a wall for the snow bank or drift. With plows which merelyoperate at the bottom of the bank and do not discharge the snow at aconsiderable height, the'snow falls down after the plow passes as abovedescribed making an objectionable obstruction.

From the above description it is seen that applicant has provided, animproved form of plow and one particularly adapted to make a clear andwell-defined path through a. deep bank or drift and a path which willnot be vobstructed by the snow caving or falling inward thereinto. Theplow is 'com paratively simple in construction and can be very durablyand ruggedly made. The same has been amply demonstrated in actualpractice and found to be very successful and efficient.

It will, of course, be understood that various changes may be made inthe form, de-

tails, proportions and arrangement of the parts, without departing'fromthe scope of applicants invention, which, generally stated, consists ina device capable of carrying out the objects above set forth, in thenovel parts and combinations of parts disclosed and defined in theappended claims.

What is claimed is: 1. A snow plow having in combination, mold boardsbeing forwardly and inwardly inclined and meeting in a -central line,eac of said mold boards forming a continuous surface of concave form,one of said mold boards having a cut away portion at its outer top edge,a conduit extending upwardly from said mold board, having an open outerside and having its lower end secured to said mold board to enclose thecut away portion and a rotor disposed adjacent the outer edge of saidmold board adapted to propel the snow upwardly and outwardly 1nto saidconduit along a tangential line.

2. A snow plow havm in combination, a mold board extending aterally andrearwardly and being of partially cylindrical form at its outerend, saidmold board having a cut away portion at its top, a chute disposed oversaid cutaway portion and extending upwardly therefrom, a plate extendingacross the outer end of said mold board and partially closing thesame,but leaving an openin between the top thereof and the top of sai moldboard, and a rotor disposed adjacent said chute and plate fordischarging snow through said opening and chute in substantially atangential direction.

3. The structure set forth 'in Claim 2, said plate having a top sectionadapted to be swung down to increase the size of said opening.

4. The structure defined in claim 2, and a blade secured to said plateand to said chute and projectin forwardly therefrom,

said blade inclining orwardly and outwardly toward its upper end.

5. A snow plow having in combination, a mold board extending laterallyand rearwardly, said mold board being of semicylindrical form at itsouter end and having a cutaway ortion at its top, a chute extendingvertlca y from said cut away portion and having an open outer side, aplate closing the lower portion of said .mold board at its outer end anda rotor disposed at the outer end of said mold board and rotatable aboutan axis parallel to the axis of concavity of said mold board, adapted toengage the snow and direct the same upward y into said chute.

6. A snow plow having in combination, a mold board extending laterallyand rear- .wardly having a concave surface and being partiallycylindrical at its outer end, said,..

mold board having a cutaway portion at its top, a chute extendingvertically from said mold board and enclosing said cut away portion atits bottom, said chute being open at its outer side, and the'outer sideof said chute and the mold board being in substantially the same planeand inclined slightly outwardly from the vertical.

7. A snow plow having in combination, a mold board extending laterallyand rearwardly and of concave form, a rotor disposed at the outer end ofsaid mold board a plate closing the lower portion of the outer end ofsaid mold board, a blade extending along the front end of said plate andupwardly and outwardly therefrom, and a conduit extending verticallyfrom the outer end of said mold board, and into which said rotordelivers.

8. A snow plow having in combination, a laterally and rearwardlyextending mold board, a plate closing the lower outer portion. of saidmold board, a blade at the outer end of said mold board having aforwardly directed edge, said blade inclining forwardly toward its upperend and inclining slight-1y outwardly toward its upper end.

In testimony whereof I aflix my signature.

JOHN O. JOHNSON.

